in order to meet different needs of customers, we provide two series of ball valves , full bore and reduced bore ball valve .
为满足客户的不同需求,球阀设有全通径及缩径两大系列。
inner ring with reduced bore diameter tolerance
内圈内径公差带变窄
reduced bore nonferrous metal ball valves
有色金属变径直通球阀
reduced bore steel ball valves
钢制变径直通球阀
Improvement of bore hones reduced all friction losses by about 8%.
改进缸孔珩磨质量,可降低摩擦损失8%左右;
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